The original recipe calls for Cointreau, but I subbed in triple sec for ours and it works fine (and costs less). I think we'll find drinks for each of the Triple Crown races for you this year (and don't forget that we have the other two boroughs of New York to pour for you, yet).
Classic Pour Series
2 ounces light rum
1 ounce orange juice
1/2 ounce Cointreau
1/2 ounce fresh-squeezed lime juice
Pour all of the ingredients over ice in a blender. Blend and spoon into a cocktail glass.